How to fix "Class Not Registered" Error, in ZKTeco attendance management software

Follow the steps below to register zkemkeeper.dll:

1. Open Command Prompt as Administrator.
2. Run the following command:

regsvr32 C:\Windows\SysWOW64\zkemkeeper.dll

This will register the DLL file. You will see a window with the following message:

DLLRegisterServer in C:\Windows\SysWOW64\zkemkeeper.dll succeeded

Now the application should work without the error.